Spring bottom



Sept. 13,192'7.

J. F. BROWN SPRING BoT'oM Filed June ,15, 1925 Patented Sept. 13, 1927.

UNITED STATES PATENT OFFICE.

JEFFERSON F. BROVN, OF MEMPHIS, TENNESSEE, .ASSIGNOR TO U. S. BEDDING COM- PANY, GF IVIEMPHIS, TENNESSEE, A CORPORATION OF GEORGIA.

SPRING BOTTOM.

My invention relates to improvements in spring cushions. or bottoms, for use in bed springs, box springs, upholstered seats, automobile seats, and in other places where a spring bottom or cushion is required.

An important object of the invention is to provide a guiding and supporting element, of simpliiied construction, which will cause the edge or border of the spring bottom, to move substantially vertically, when depressed thus preventing perceptible lateral movement of the border which would result in the swaying of the coil springs, or outward bulging of the border.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a fragmentary plan view of a spring bottom embodying my invention,

Figure 2 is a transverse section taken on line 2 2 of Figure 1,

Figure 3 is a perspective view, parts broken away, of the supporting and guiding arm, and,

Figure t is a perspective view of a modified form of the invention, parts broken away.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates the lower frame of the spring bottom, preferably formed of angle irons, as is well known. This lower frame has the usual coil springs 6, mounted upon and attached to the same, by the usual means employed in the art. The upper frame of the spring bottom is designated by the numeral 7, and this frame may be formed of a wire or rod, possessing suitable stiffness. This frame constitutes a border, and the upper ends of the springs 6 are suitably secured to each other, and to this border frame, as is well known in the art.

The invention resides principally in the provision of means to cause the border frame 7 to move vertically, without partaking of substantial lateral movement. I have shown two of these devices, designated as a whole by the numeral 8, but it is of course understood that any suitable number of these devices may employed, in connection with Application filed June 15, 1925. Serial No. 37,379.

the border frame, as may be found advantageous.

Each control device embodies a rigid arm 9, preferably formed of strap iron, which is preferably twisted at 10, so that it may be bent at its end into an eye 11, to surround the rod or wire of the border frame 7. The border frame 7 is preferably circular in cross section. and hence theeye 11 is pivoted thereon. The arm 9 is angularly arranged and inclines downwardly toward its inner end, and is then bent into a horizontal portion 11a. This horizontal portion hasits inner end pivotally connected, as shown vat 12, with an upstanding link 13, which is pivoted at 14, to a stationary transverse rail 15. This transverse rail is rigidly attached to the lower frame 5. The link 13 is adapted to swing in a vertical plane, transversely of the spring bottom, as shown. Disposed outwardly of and adjacent t0 the vertical link 13 is a vertical stationary guide plate 16, riveted or otherwise rigidly attached to the rail 15, as shown at 17. This guide plate is provided with an incline-d slot 18. extend" ing downwardly in an inward direction, and this slot receives a guide pin 19, rigidly attached to the horizontal end portion 11a of the arm 9.

lVhen the upper border frame 7 is depressed, adjacent to its border, such border' moves downwardly, but it is positively held against outward lateral movement, and is caused to travel ina substantially vertical plane, by virtue of the inward movement of ythe guide arm 9, which as it is lowered, also partakes of an inward longitudinal movement` by virtue of the inclination of the slot 18.

In Figure 4 I have shown a modiied form of the device. In this form. each control device embodies a straight inclined rigid arm 20, preferably formed of strap iron, which is preferably twisted at 21, so that it may be bent at its upper end into an eye 22, to surround and pivotally receive the border frame 7. The lower end of the arm 2O carries a headed stud 23, slidable within an elongated horizontal slot 24, formed in a stationary plate, in the form of a rail 25, corresponding to the rail 15, and attached to the lower frame 5, as shown. The lever 20 is pivoted between its ends, as shown atk 26, with a vertically swinging link a?, which is pivoted. to the plate or mil Se, as shown at 28. The control device is yof course used with the same spring bottom, as illustrated in Figures 1 and 2, wherein the border trame is supported from the lower frame by means of the coil springs 6.

It is thus seen that as the border frame 7 is depressed, it can not move laterally and outwardly, as the arm 2() will be shifted inwardly or generally horizontally.

The device is particularly useful when 'springs vare compressed and packed for shipment, as the border is lrept straight and cannot become bent or forced out of its proper shape. A kmattress spring or box spring, equipped with the device, is very advantageous as the edge or border ot' the same cannot sag or move outwardly, when depressed, so that it would Contact with a wooden bed, or the like, scratching or injuring the same.

It is to be understood that the forms ot' my invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in the shape, size, and arrangement of parts may be resorted `to wit-hout departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, l claim:

1. The combination with a. spring1 bottom comprising a lower :trame and an upper `border frame and springs connected therewith, of a guide arm pivotally connected with the border' frame and inclined downwardly therefrom and projecting inwardly with relation to the border trame, said guide arm being provided at its inner end with a substantially horizontal portion, a vertically swinging link pivotally connected with the substantially horizontal portion, a stationary guide plate arranged adjafient to the substantially horizontal port-ion and having an inclined slot projecting downwardly in u inwardly direction, and an element carried by said substantially horizontal portion and slid'able within the inclined slot.

2. The combination with a saring bottoni comprising a lower ,trame and an upper border frame and springs connected therewith, *of a guide arm pivotally connected with the border traine and inclined doi wardly tlrerelirom and projecting` inwar with relation to the border traine, anl upstanding stationary guide plate arranged adjacent to the inner portion ot the guide` arm and attached to the lower trame and having an inclined slot projecting downwardly in an inwardly direction, a pin Carried by the inner portion ot the guide arm and slidable within the inclined slot, and an upstanding link arranged upon the inner side of the stationary guide plate and pivotally connected with the inner end ot the guide arm and pivotally connected with the lower frame.

ln testimony whereof l atlix my signature.

,inrrnnson r. nnown. 

